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A range of solar-powered active infra-red beam sensors to provide an exceptionally high immunity to false alarms. Beam lengths of 20 - 200m are offered. All are completely wireless, with a built-in battery pack and a solar trickle-charger on each unit. They need only a couple of hours sunlight a fortnight to keep them ticking over happily.

 
Solar-powered infra-red triple-beam set (100m)
Solar-powered infra-red triple-beam set (100m)
£149.00